Question

Robert has 22.8% of his cereal left. Choose the decimal that best represents how much of his cereal he has eaten.

• A. 0.325
• B. 0.228
• C. 0.22
• D. 0.77
• E. 0.772

Hint:

Always subtract from 100% to find the "used" or "eaten" portion, then convert to decimal by dividing by 100.

Answer 1

The Correct Option is D

Step 1: Find cereal eaten.
If 22.8% is left, then cereal eaten = \[ 100% - 22.8% = 77.2% \]
Step 2: Convert to decimal.
\[ 77.2% = 0.772 \]
Step 3: Approximate.
Among the options, 0.77 is the closest decimal representation.
Final Answer: \[ \boxed{0.77} \]